NGWS SDK Documentation  

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Compiler Error C3739

'class': syntax is only supported when layout_dependent=true

You tried to hook an entire interface of events but layout_dependent on event_receiver attribute is not true; you must hook a single event at a time.

The following sample generates C3739:

struct A { 
   __event void e(); 
};

// event_receiver is implied
// [ event_receiver(layout_dependent=false)]

// use the following line instead
// [event_receiver(com, layout_dependent=true), coclass ]
struct B {
        void f();
        B(A* a) {
         __hook(A, a, &B::f);   // C3739   
   // use the following line instead to hook a single event 
         // __hook(&A::e, a, &B::f);
        }
};

void main() {
}